export function timeFix () {
  const time = new Date()
  const hour = time.getHours()
  return hour < 9 ? '早上好' : hour <= 11 ? '上午好' : hour <= 13 ? '中午好' : hour < 20 ? '下午好' : '晚上好'
}

export function welcome () {
  const arr = ['休息一会儿吧', '准备吃什么呢?', '要不要打一把 DOTA', '我猜你可能累了']
  const index = Math.floor(Math.random() * arr.length)
  return arr[index]
}

/**
 * 触发 window.resize
 */
export function triggerWindowResizeEvent () {
  const event = document.createEvent('HTMLEvents')
  event.initEvent('resize', true, true)
  event.eventType = 'message'
  window.dispatchEvent(event)
}

export function handleScrollHeader (callback) {
  let timer = 0

  let beforeScrollTop = window.pageYOffset
  callback = callback || function () {}
  window.addEventListener(
    'scroll',
    event => {
      clearTimeout(timer)
      timer = setTimeout(() => {
        let direction = 'up'
        const afterScrollTop = window.pageYOffset
        const delta = afterScrollTop - beforeScrollTop
        if (delta === 0) {
          return false
        }
        direction = delta > 0 ? 'down' : 'up'
        callback(direction)
        beforeScrollTop = afterScrollTop
      }, 50)
    },
    false
  )
}

export function isIE () {
  const bw = window.navigator.userAgent
  const compare = (s) => bw.indexOf(s) >= 0
  const ie11 = (() => 'ActiveXObject' in window)()
  return compare('MSIE') || ie11
}

/**
 * Remove loading animate
 * @param id parent element id or class
 * @param timeout
 */
export function removeLoadingAnimate (id = '', timeout = 1500) {
  if (id === '') {
    return
  }
  setTimeout(() => {
    document.body.removeChild(document.getElementById(id))
  }, timeout)
}
export function scorePassword (pass) {
  let score = 0
  if (!pass) {
    return score
  }
  // award every unique letter until 5 repetitions
  const letters = {}
  for (let i = 0; i < pass.length; i++) {
      letters[pass[i]] = (letters[pass[i]] || 0) + 1
      score += 5.0 / letters[pass[i]]
  }

  // bonus points for mixing it up
  const variations = {
      digits: /\d/.test(pass),
      lower: /[a-z]/.test(pass),
      upper: /[A-Z]/.test(pass),
      nonWords: /\W/.test(pass)
  }

  let variationCount = 0
  for (var check in variations) {
      variationCount += (variations[check] === true) ? 1 : 0
  }
  score += (variationCount - 1) * 10

  return parseInt(score)
}

/**
     * 将数组组装成数结构
     * @param {*} list      数据集合
     * @param {*} pid       数据标识上级主键（默认pid）
     * @param {*} children  下级集合字段名（默认children）
     * @param {*} pk        唯一标识符（主键，默认id）
     * @param {*} keep_child  下级没有数据是否需要保存数组 []（默认false）
     */
export function arrayTransTree(list, root_value, pid = 'pid', children = 'children', pk = 'id' ,keep_child = false){
  var result=[]
		  list.map((e)=>{
			  if( (!!root_value && e[pid]===root_value) || (!root_value && !e[pid]) ){
				  e[children]=arrayTransTree(list,e[pk],pid,children,pk,keep_child);	
				  result.push(e);
			  }
		  })
  return result;
}

/**
     * 将树组装成数组结构
     * @param {*} list      数据集合
     * @param {*} pid       数据标识上级主键（默认pid）
     * @param {*} children  下级集合字段名（默认children）
     * @param {*} pk        唯一标识符（主键，默认id）
     * @param {*} keep_child  下级没有数据是否需要保存数组 []（默认false）
     */
 export function treeTransArray(tree, children = 'children'){
  var result=[]
  tree.forEach(i => {
    result.push(i);
    let childrenItem = i[children];
    delete i[children];
    if(childrenItem && childrenItem.length > 0) result.push(...treeTransArray(childrenItem))
  });
  return result;
}